The most widespread way is through Wireless Emergency Alerts (WEA), which sends loud alerts to all cellphones. If an ...

An earthquake is caused by a sudden slip on a fault, according to USGS. Tectonic plates are always slowly moving, but they get stuck at their edges due to friction. When the stress on an edge ...

Nearly 75% of the country is at risk for a potentially damaging earthquake in the next 100 years, according to a recently updated map from the U.S. Geological Survey. The map is the first to include ...

Question: I was told an earthquake in Madrid was the strongest ever felt in North America. How is that possible? Answer: I bet are you thinking of Madrid, Spain. The strongest earthquake in North ...

A major, 7.4-magnitude earthquake struck in the Philippine Sea on Friday, according to the United States Geological Survey.